I have someone who is regularly laying some big 'ol double yolkers. For peeps and giggles I decided to put one under my broody. I had not really read anything about hatching double yolkers until yesterday when I decided to do some research and I discovered that the hatch rate was pretty poor for them . So now I feel kinda bad for even putting that egg under her in the first place. Nevertheless, there are two healthy looking embryos developing inside of it bouncing around. I have assisted in quite a few difficult hatches over the years, eggs that were abandoned a few days from hatch date and got chilled, weak chicks that couldnt make it all the way out on their own, ones with misc. medical problems, and they have all survived (except one because he aspirated) and are fully functional members of my flock today. So I am wondering if there is any chance of these twins making it to day 21, and if they do, do you think an assisted hatch would help them come into this world without a casualty? I am open to any suggestions. I do not have an incubator, I rely on my good ol broodies to do the job for me. I currently have 2 setting right now, one is a few days behind the mama with the double yolk, so she is my "backup" incubator in case we have any issues. I also have a makeshift incubator I make with a rubbermaid and two heating pads that has gotten me thru several difficult hatches as well. And as always, I have my mama heating pad "ChickU" (you know, like a NICU!) set up a few days before hatch date in case anyone needs a little extra TLC. And of course, I am also prepared to deal with any losses we may incur for whatever reason. If the twins manage to hatch, I already have names picked out for them.... Eggbert and Eggsmerelda! I have read several success stories so I am hoping they make it. But any comments or suggestions would be appreciated!